4-[(4-methylphenoxy)methyl]-10-phenyl-2H-thiopyrano[2,3-b][1,8]naphthyridin-5-one 在
三氯化铝 作用下,
以
二氯甲烷 为溶剂,
以80%的产率得到(2R,10S)-2,7-dimethyl-14-phenyl-3-oxa-12-thia-14,16-diazapentacyclo[11.8.0.02,10.04,9.015,20]henicosa-1(13),4(9),5,7,15(20),16,18-heptaen-21-one